Method for monitoring the goodness of the cement bond to a borehole casing

Patent · Tue Feb 28 04:00:00 EST 1989

OSTI ID:6272625

Vogel, C B; Davis, M; Guy, J O; Smith, J R.E.

A method is described for monitoring the goodness of a cement bond to a borehole casing, comprising the steps of: suspending an acoustic logging tool in a cased borehole, the casing being characterized by a transverse-wave propagation velocity of V/sub m/ the logging tool including an acoustic transmitter element and an acoustic receiver element that is spaced apart from the transmitter element, the transmitter and receiver elements being characterized by two orthogonal dimensions, one of which is of a preselected length L; insonifying the casing at normal incidence thereto with acoustic radiation from the transmitter element in the spectral region of a frequency component; and detecting the converted-compresional waves emanating from the casing along the normal thereto at a point along the casing opposite to the receiver element.

• Assignee: Western Atlas International, Inc., Houston, TX
• Patent Number(s): US 4809237
• OSTI ID: 6272625
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ACOUSTIC MEASUREMENTS
BINDING ENERGY
BUILDING MATERIALS
CEMENTING
CEMENTS
ENERGY
MATERIALS
MONITORING
NATURAL GAS WELLS
OIL WELLS
PROBES
SONIC PROBES
SOUND WAVES
WELL COMPLETION
WELLS